Home / 39,439.28-54,426.47-21,534.41

Finding the Fourth Proportional to 39,439.28, 54,426.47 and 21,534.41

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Solution

The fourth proportional to 39,439.28, 54,426.47 and 21,534.41 is: 29,717.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.28 : 54,426.47 = 21,534.41 : x
  2. Step 2: Convert to fraction form
    39,439.28/54,426.47 = 21,534.41/x
  3. Step 3: Cross multiply
    39,439.28x = 54,426.47 × 21,534.41
  4. Step 4: Simplify right side
    39,439.28x = 1,172,041,540.03
  5. Step 5: Solve for x
    x = 1,172,041,540.03/39,439.28
  6. Step 6: Final answer
    x = 29,717.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.